SnowStoppers Kid's Waterproof Stay On Winter Nylon Mittens Extra Small - No Thumbs Patented SnowStopper Extra Long Cuff Thinsulate Insulation and Fully Waterproof Drypel Liner They are fully Waterproof and they DON'T FALL OFF! Getting the right size is important: We suggest getting the next size up if you're not sure which size you need.